" Anthony Perkins
" https://github.com/acperkins/vimfiles
"
" Distributed under the VIM license. See ':help license' for a copy. Files
" under pack/ and coc/extensions/node_modules/ have their own licenses.
"
" Includes parts from Tim Pope's «sensible.vim»
" <https://github.com/tpope/vim-sensible>.

"===============================================================================
" Set this first to avoid overwriting later settings.
set nocompatible

"===============================================================================
" Load Pathogen if Vim does not support packages.
if !has('packages')
	runtime pack/acp/opt/vim-pathogen/autoload/pathogen.vim
	execute pathogen#infect('pack/acp/start/{}')
endif

"===============================================================================
" General settings for all builds.

" Set colour levels for different terminals.
set t_Co=256
set termguicolors

inoremap <C-BS> <C-W>
inoremap <C-a> <C-O>^
inoremap <C-e> <C-O>$
inoremap <F12> <C-\><C-O>:w<CR>
inoremap <F9> <C-R>=strftime('%Y-%m-%dT%H:%M')<CR>
inoremap <down> <nop>
inoremap <left> <nop>
inoremap <right> <nop>
inoremap <up> <nop>

nnoremap <F11> :Goyo<bar>:Limelight!!<CR>
nnoremap <F12> :w<CR>
nnoremap <F7> :setlocal spell! spelllang=en_gb<CR>
nnoremap <down> <nop>
nnoremap <left> <nop>
nnoremap <right> <nop>
nnoremap <up> <nop>
nnoremap gB :bprevious<CR>
nnoremap gb :bnext<CR>

" Text wrapping and margin settings. Setting tw=72 is ideal for emails or
" anything that will be read in a Terminal, while tw=100 is better for code or
" for general text that will be viewed in a GUI. If printing, an A4-sized page
" should fit 100 columns at 8pt or 80 columns at 10pt, in Courier or Liberation
" Mono fonts.
set colorcolumn=73,81  " Suggestions: 73, 81, 101
set textwidth=80  " Suggestions: 72, 80, 100

" All other settings.
set autoindent
set autoread
set background=dark
set backspace=indent,eol,start
set cmdheight=1
set directory=$TEMP//,/tmp//,.
set display+=lastline
set encoding=utf-8
set formatoptions-=t
set hidden
set history=1000
set ignorecase
set incsearch
set laststatus=2
set linebreak
set list
set listchars=trail:·,extends:→,precedes:←,nbsp:␣
set modelines=0
set nobackup
set noexpandtab
set nojoinspaces
set nomodeline
set nowritebackup
set nrformats-=octal
set number
set numberwidth=8
set relativenumber
set ruler
set scrolloff=2
set sessionoptions-=options
set shortmess+=c
set smartcase
set smarttab
set spl=en_gb nospell
set tabstop=8
set ttimeout
set ttimeoutlen=100
set ttyfast
set updatetime=300
set wrap

"===============================================================================
" General settings for non-minimal Vim builds.

if has('eval')
	" Protect commands that are only available when +eval is enabled.
	" Technically only 'if 1' would be required, as 'has()' is provided by
	" +eval, but this is clearer.
	command Q q
	command W w
	command WQ wq
	command Wq wq
	filetype plugin indent on
	let g:ale_completion_enabled=1
	let g:ale_sign_column_always=1
	let g:go_def_mode='gopls'
	let g:go_info_mode='gopls'
	let g:go_version_warning=0
	let g:goyo_width=100
	let g:netrw_altv=1
	let g:netrw_banner=0
	let g:netrw_browse_split=4
	let g:netrw_liststyle=3
	let g:netrw_sort_sequence='[\/]$,*'
	let g:netrw_winsize=-28
	let g:org_indent=0
	let g:org_tag_column=78
	let g:tempus_enforce_background_color=1
	"
	" Set theme for Terminal.
	colorscheme tempus_night
endif

"===============================================================================
" Settings based on feature detection.

if has('autocmd')
	autocmd BufRead,BufNewFile * set omnifunc=syntaxcomplete#Complete
	autocmd BufRead,BufNewFile *.go set noet sw=8 ts=8
	autocmd BufRead,BufNewFile *.html set et sw=2
	autocmd BufRead,BufNewFile *.md set et ft=markdown sw=2
	autocmd BufRead,BufNewFile *.opml set et sw=2
	autocmd BufRead,BufNewFile *.rs set et sw=4
	autocmd BufRead,BufNewFile *.txt set et sw=3 tw=72
	autocmd BufRead,BufNewFile *.xml set et sw=2
	autocmd BufRead,BufNewFile *.yaml set et sw=2
	autocmd BufRead,BufNewFile *.yml set et sw=2
endif

if has('folding')
	set nofoldenable
endif

if has('gui_running')
	if has('gui_gtk')
		set clipboard=unnamedplus
		set guifont=Monospace\ 10
	elseif has('gui_win32')
		set clipboard=unnamed
		set guifont=Iosevka_Fixed_Extended:h10:cANSI
		set rop=type:directx
	endif
	set columns=132
	set guioptions+=c
	set guioptions+=m
	set guioptions-=T
	set guioptions-=f
	set lines=43
endif

if has('patch-7.3.541')
	set formatoptions+=j
endif

if has('patch-8.1.0759')
	set listchars+=tab:┆  
else
	set listchars+=tab:┆ 
endif

if has('patch-8.1.1564')
	set signcolumn=number
else
	set signcolumn=yes
endif

if has('patch-8.2.2454')
	set listchars+=lead:·
endif

if has('printer')
	set printheader=%t%h%m%=Page\ %N
	set printoptions=paper:A4,number:y,syntax:n
endif

if has('smartindent')
	set nosmartindent
endif

if has('syntax')
	syntax on
endif

if has('viminfo')
	set viminfo="NONE"
endif

if has('wildmenu')
	set wildmenu
endif

if has('nvim')
	" Neovim config.
	packadd! nvim-lspconfig
lua << __EOF__
	local servers = { 'clangd', 'gopls', 'rls' }
	for _, lsp in ipairs(servers) do
	require('lspconfig')[lsp].setup {
		on_attach = on_attach,
		flags = {
			debounce_text_changes = 150,
		}
	}
	end
__EOF__
	autocmd BufRead,BufNewFile * set omnifunc=v:lua.vim.lsp.omnifunc
endif

" Customise colour schemes. Keep this near the end.
if &background ==# 'light'
	highlight SpecialKey ctermfg=lightgray ctermbg=NONE
				\ guifg=lightgray guibg=NONE
else
	highlight SpecialKey ctermfg=darkgray ctermbg=NONE
				\ guifg=darkgray guibg=NONE
endif
highlight ColorColumn ctermfg=NONE guifg=NONE

" Keep this as the last config line in the file.
runtime vimrc.local

"===============================================================================
" End of config file.
" vim:set ft=vim: